Global Patent Index - EP 4092437 A1

EP 4092437 A1 20221123 - RF TRANSMIT ARRAY WITH DYNAMIC IMPEDANCE CONTROL

Title (en)

RF TRANSMIT ARRAY WITH DYNAMIC IMPEDANCE CONTROL

Title (de)

HF-SENDE-ARRAY MIT DYNAMISCHER IMPEDANZREGELUNG

Title (fr)

RÉSEAU DE TRANSMISSION RF À COMMANDE D'IMPÉDANCE DYNAMIQUE

Publication

EP 4092437 A1 20221123 (EN)

Application

EP 21174351 A 20210518

Priority

EP 21174351 A 20210518

Abstract (en)

A radio frequency (RF) transmit array (1) for magnetic resonance imaging, wherein the RF transmit array (2) being arranged to generate an RF transmit field, includes a least one antenna element (2), wherein the antenna element (2) comprising a conductive loop (3) and the antenna element (2) is adapted to be driven by a radio frequency (RF) driving field. Each antenna element (2) comprises an impedance control unit (4) for controlling the impedance of the antenna element (2) and at least one pickup loop (5) for sampling RF pulses to control a transmit/receive switching of the antenna element (2) and allowing impedance selection for each antenna element (2). The RF transmit array (1) is arranged to generate a spatially distributed RF transmit field for RF spatial encoding of magnetic resonance signals by dynamically controlling the impedance of the antenna element (2).

IPC 8 full level

G01R 33/36 (2006.01)

CPC (source: EP)

G01R 33/3628 (2013.01); G01R 33/3642 (2013.01); G01R 33/341 (2013.01); G01R 33/3415 (2013.01); G01R 33/3692 (2013.01); G01R 33/4831 (2013.01)

Citation (applicant)

WO 2013008116 A1 20130117 - KONINKL PHILIPS ELECTRONICS NV [NL], et al

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4092437 A1 20221123

DOCDB simple family (application)

EP 21174351 A 20210518